121343040542 has 16 divisors (see below), whose sum is σ = 191852184960. Its totient is φ = 57400909272.

The previous prime is 121343040541. The next prime is 121343040563. The reversal of 121343040542 is 245040343121.

121343040542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121343040541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2120648 + ... + 2177115.

It is an arithmetic number, because the mean of its divisors is an integer number (11990761560).

Almost surely, 2^121343040542 is an apocalyptic number.

121343040542 is a deficient number, since it is larger than the sum of its proper divisors (70509144418).

121343040542 is a wasteful number, since it uses less digits than its factorization.

121343040542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298527.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 121343040542 its reverse (245040343121), we get a palindrome (366383383663).

The spelling of 121343040542 in words is "one hundred twenty-one billion, three hundred forty-three million, forty thousand, five hundred forty-two".